package com.sky.service.impl;

import com.sky.dto.GoodsSalesDTO;
import com.sky.mapper.UserMapper;
import com.sky.service.WorkspaceService;
import com.sky.vo.*;
import org.apache.commons.lang.StringUtils;
import com.sky.entity.Orders;
import com.sky.mapper.OrderMapper;
import com.sky.service.ReportService;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class ReportServiceImpl implements ReportService {
@Autowired
private OrderMapper orderMapper;
@Autowired
private UserMapper userMapper;
@Autowired
private WorkspaceService workspaceService;

    @Override
    public TurnoverReportVO getTurnover(LocalDate begin, LocalDate end) {
      List<LocalDate>dateList=new ArrayList<>();
        dateList.add(begin);
        while(!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        List<Double>turnoverList=new ArrayList<>();
        for(LocalDate d:dateList){
            LocalDateTime beginTime=LocalDateTime.of(d, LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(d,LocalTime.MAX);
            Map mp=new HashMap();
            mp.put("status", Orders.COMPLETED);
            mp.put("begin",beginTime);
            mp.put("end",endTime);
          Double turnover=orderMapper.sumByMap(mp);
          turnover=turnover==null?0.0:turnover;
          turnoverList.add(turnover);


        }
        return TurnoverReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .turnoverList(StringUtils.join(turnoverList,","))
                .build();
    }

    @Override
    public UserReportVO getUserStatistics(LocalDate begin, LocalDate end) {
       List<Integer>totalNumList=new ArrayList<>();
       List<Integer>newNumList=new ArrayList<>();
        List<LocalDate>dateList=new ArrayList<>();
       dateList.add(begin);
       while(!begin.equals(end)){
           begin=begin.plusDays(1);
           dateList.add(begin);
       }
       for(LocalDate d:dateList){
           LocalDateTime beginTime=LocalDateTime.of(d,LocalTime.MIN);
           LocalDateTime endTime=LocalDateTime.of(d,LocalTime.MAX);
           Integer newNum=getNumCount(beginTime,endTime);
           Integer totalNum = getNumCount(null, endTime);
            newNumList.add(newNum);
            totalNumList.add(totalNum);

       }

        return UserReportVO.builder()
                .dateList(StringUtils.join(dateList,","))
                .totalUserList(StringUtils.join(totalNumList,","))
                .newUserList(StringUtils.join(newNumList,","))
                .build();
    }

    @Override
    public OrderReportVO getOrderStatistics(LocalDate begin, LocalDate end) {
        List<LocalDate>dateList=new ArrayList<>();
        dateList.add(begin);
        while(!begin.equals(end)){
            begin=begin.plusDays(1);
            dateList.add(begin);
        }
        List<Integer>orderCountList=new ArrayList<>();
        List<Integer>orderValidList=new ArrayList<>();
        for(LocalDate d: dateList){
            LocalDateTime beginTime=LocalDateTime.of(begin,LocalTime.MIN);
            LocalDateTime endTime=LocalDateTime.of(end,LocalTime.MAX);
            Integer orderCount=getOrderCount(beginTime,endTime,null);
            Integer orderValid=getOrderCount(beginTime,endTime,Orders.COMPLETED);
            orderCountList.add(orderCount);
            orderValidList.add(orderValid);

        }
        Integer totalOrderCount = orderCountList.stream().reduce(Integer::sum).get();
        Integer validOrderCount = orderValidList.stream().reduce(Integer::sum).get();
        Double orderCompletionRate = 0.0;
        if(totalOrderCount != 0){
            orderCompletionRate = validOrderCount.doubleValue() / totalOrderCount;
        }
        return OrderReportVO.builder()
                .dateList(StringUtils.join(dateList, ","))
                .orderCountList(StringUtils.join(orderCountList, ","))
                .validOrderCountList(StringUtils.join(orderValidList, ","))
                .totalOrderCount(totalOrderCount)
                .validOrderCount(validOrderCount)
                .orderCompletionRate(orderCompletionRate)
                .build();
    }

    @Override
    public SalesTop10ReportVO getSalesTop10(LocalDate begin, LocalDate end) {
        LocalDateTime beginTime = LocalDateTime.of(begin, LocalTime.MIN);
        LocalDateTime endTime = LocalDateTime.of(end, LocalTime.MAX);
        List<GoodsSalesDTO> goodsSalesDTOList = orderMapper.getSalesTop10(beginTime, endTime);

        String nameList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getName).collect(Collectors.toList()),",");
        String numberList = StringUtils.join(goodsSalesDTOList.stream().map(GoodsSalesDTO::getNumber).collect(Collectors.toList()),",");

        return SalesTop10ReportVO.builder()
                .nameList(nameList)
                .numberList(numberList)
                .build();
    }

    @Override
    public void exportBusinessData(HttpServletResponse response) {
        LocalDate begin=LocalDate.now().minusDays(30);
        LocalDate end=LocalDate.now().minusDays(1);
        BusinessDataVO businessData =workspaceService.getBusinessData(LocalDateTime.of(begin,LocalTime.MIN), LocalDateTime.of(end, LocalTime.MAX));
        InputStream inputStream =this.getClass().getClassLoader().getResourceAsStream("template/运营数据报表模板.xlsx");
        try {
            XSSFWorkbook excel=new XSSFWorkbook(inputStream);
            XSSFSheet sheet = excel.getSheet("Sheet1");
            sheet.getRow(1).getCell(1).setCellValue(begin + "至" + end);
            XSSFRow row = sheet.getRow(3);
            row.getCell(2).setCellValue(businessData.getTurnover());
            row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
            row.getCell(6).setCellValue(businessData.getNewUsers());
            row = sheet.getRow(4);
            row.getCell(2).setCellValue(businessData.getValidOrderCount());
            row.getCell(4).setCellValue(businessData.getUnitPrice());
            for (int i = 0; i < 30; i++) {
                LocalDate date = begin.plusDays(i);
                //准备明细数据
                businessData = workspaceService.getBusinessData(LocalDateTime.of(date,LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX));
                row = sheet.getRow(7 + i);
                row.getCell(1).setCellValue(date.toString());
                row.getCell(2).setCellValue(businessData.getTurnover());
                row.getCell(3).setCellValue(businessData.getValidOrderCount());
                row.getCell(4).setCellValue(businessData.getOrderCompletionRate());
                row.getCell(5).setCellValue(businessData.getUnitPrice());
                row.getCell(6).setCellValue(businessData.getNewUsers());
            }
            //通过输出流将文件下载到客户端浏览器中
            ServletOutputStream out = response.getOutputStream();
            excel.write(out);
            //关闭资源
            out.flush();
            out.close();
            excel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }

    private Integer getNumCount(LocalDateTime beginTime, LocalDateTime endTime) {
        Map map = new HashMap();
        map.put("begin",beginTime);
        map.put("end", endTime);
        return userMapper.countByMap(map);
    }

    private Integer getOrderCount(LocalDateTime beginTime, LocalDateTime endTime, Integer status) {
        Map map = new HashMap();
        map.put("status", status);
        map.put("begin",beginTime);
        map.put("end", endTime);
        return orderMapper.countByMap(map);
    }

}
